(TERRE HAUTE) - A school bus driver in Terre Haute says he thought he had run over something in the roadway Thursday morning, but minutes later the driver picked up a student who noticed that someone had shot a hole in a passenger window.

That's when the driver realized there was damage also to his front right side window glass.

State Police Sgt. Joe Watts says it appears the shots were fired from an air-powered rifle. No injuries--but they're looking for the shooter.